@misc{indiciaeff710158e391,
  title = {Strapdown inertial navigation at the Marshall Space Flight Center A study},
  author = {Daniel, F. P. and Doane, G. B., III and Kissel, R. R.},
  year = {1968},
  url = {https://ntrs.nasa.gov/citations/19690027477},
  note = {Source identifier: 19690027477}
}